21.2 #2

1. 1   0
2. 2   0
3. 3   0
4. 4   0
5. 5   0
6. 6   0
Round #1
0
0
2   3
4 5
Round #2
0
0
1   2
6 5
Round #3
0
0
1   3
2 4
Round #4
0
0
5   1
6 4
Round #5
0
0
4   2
6 3
Round #6
0
0
1   2
5 6
Round #7
0
0
3   4
6 5